Transcription of SEWERAGE SYSTEM Standard Practice Manual - bcossa.org
1 SEWERAGE SYSTEM Standard Practice Manual Version 2 SEWERAGE SYSTEM Standard Practice Manual Version 2 21st September 2007 Prepared for: Ministry of Health Population Health and Wellness Health Protection 4th Floor, 1515 Blanshard Street Victoria, BC, V8W 3C8 Prepared by: British Columbia Onsite Sewage Association (BCOSSA) Box 47071 Victoria, BC, V9B 5T2 SEWERAGE SYSTEM Standard Practice Manual Version 2 Technical Review Committee of the British Columbia OnSite Sewage Association Chair: Ian Ralston BSc pgDipAgEng ROWP Members: Michael Payne PEng, PGeo, Derek Smith , , Darryl Brizan PEng., Ron Hein ROWP, Frank Hay ROWP, Karen Halliday ROWP.
2 Resource persons: John Rowse , , , George Giles PEng, Ron McMurtie PEng SEWERAGE SYSTEM Standard Practice Manual Version 2 SPM Sunset Clause Sections 8(3) and 9(2) of the SEWERAGE SYSTEM Regulation (SSR) outline that the Standard Practice Manual (SPM) by which the Authorized Person may have regard, can be amended from time to time. The new September 2007, SPM Version 2 brings into effect new amendments. This affects all previously issued versions by the BC Ministry of Health, Population Health and Wellness, Health Protection Branch, including the latest September 2006 version on the Ministry of Health website.
3 To allow industry a transition period from the old Manual to the new, the previous September 2006 version will not formally sunset until midnight December 31, 2007. Immediate use of the new version is highly recommended, but during this transition period both versions are in effect and it is understood the Authorized Person can use either version. On January 1, 2008, only the new September 2007, SPM Version 2 will be in effect. SEWERAGE SYSTEM Standard Practice Manual Version 2 i Table of Contents Purpose and Content of the SEWERAGE SYSTEM Standard Practice Manual ..1 Overview of SEWERAGE SYSTEM Regulation.
4 1 Content SPM standards .. 3 standards .. 3 Part 2 critical standards .. 3 Part 3 significant standards and guidelines .. 4 Linked standards .. 4 Organization of the Manual .. 5 Application of Standard Practice by Authorized Persons .. 5 Administrative ..6 Administrative Process .. 6 Circumstances Where HA Could Return AP Filing .. 7 Filing Notification Referrals .. 7 Privacy .. 8 Other Administrative Jurisdictions .. 8 Restrictive Covenants .. 8 Use of Adjacent Property .. 8 Easements and Covenants .. 9 Repairs and Replacements, new uses of systems .. 9 Component Repair or Replacement.
5 9 SYSTEM Repair or Replacement .. 10 New uses of an existing SYSTEM .. 10 Seasonal Dwellings No Hydro Connection, Isolated Areas .. 11 Multiple Homes on Same Property .. 11 Roles and Responsibilities ..11 Health Authority .. 11 Authorized Person .. 12 SEWERAGE SYSTEM Owner .. 13 Critical standards ..15 Base Performance standards .. 15 Part 2 Critical standards .. 15 Linked standards .. 16 Organization and Use of Part 2 .. 16 Daily Design Flow Selection (DDF) ..17 Daily Design Flow Rates for Residences .. 17 Standard Method .. 18 Secondary method (special cases) .. 19 Minimum Daily Design Flow Rates for Facilities.
6 20 Non-Residential Waste Design Flow Tables .. 21 Other Facility Daily Design Flows .. 26 Flow Reduction Devices Mass Loading .. 27 SEWERAGE SYSTEM Standard Practice Manual Version 2 ii Garbage Grinders (Garburators) .. 27 Determination of Treatment and Dispersal SYSTEM Needs ..27 Process Selection .. 27 Soil and Site Investigation standards .. 27 Soils and water table investigation .. 27 Site investigation report .. 29 Vertical and Horizontal Separation standards Boundary Performance .. 30 Performance standards .. 30 Vertical Separation (VS) .. 30 Vertical Separation standards .. 30 Increasing Vertical Separation.
7 31 Vertical Separation Trench and Bed Systems .. 32 Vertical Separation and Sand Depth for Sand Mounds and Sand-lined Trenches 33 Horizontal separation (Setbacks) .. 34 Horizontal Setback Distances for Critical Setbacks .. 34 Reduction or Increase in Setback to Source of Drinking Water or Fresh 36 Horizontal Setback for Other Boundaries .. 37 Sand Mounds and Sand-lined Trenches Horizontal Setbacks .. 38 Hydraulic Loading Rate (HLR) standards .. 38 Seepage bed loading rates .. 39 Sand mound and sand-lined trenches basal area hydraulic loading 40 Sand media Hydraulic Loading Rate for sand mounds, and similar technology.
8 42 Lagoon systems .. 43 Soil Linear Loading Rate (LLR) standards .. 44 Movement of effluent away from the discharge area .. 44 Soil Linear Loading Rate tables .. 44 Where LLR standards cannot be met .. 45 Site Capability and SYSTEM Selection .. 49 Site Capability .. 49 Site Capability classification (limiting conditions) for specific types of systems .. 51 Flood plains .. 53 Residential Sewage and Treatment standards ..53 Levels of Treatment .. 55 Effluent types defined in the regulation .. 55 Additional treatment .. 56 Type 2 10/10 Effluent .. 56 Monitoring for Treatment Facilities and Discharge Area.
9 56 Base Performance standards ..57 LINKED standards .. 58 Organization of Part 3 ..58 Minimum Design, Installation, Maintenance and Monitoring standards ..59 SEWERAGE SYSTEM Standard Practice Manual Version 2 Planning (Design) .. 59 Site plans .. 60 62 Post installation certification .. 62 Maintenance and Monitoring .. 62 Roles and responsibilities .. 63 Owner .. 63 Planner and Installer .. 63 Maintenance Provider (MP) .. 63 Design and installation for monitoring .. 64 Maintenance Plan .. 65 Notice to Occupant .. 66 Frequency of Monitoring and Maintenance .. 66 Monitoring: .. 68 Safety.
10 69 Site Capability and Process Selection ..69 Site Capability Matching Techniques to the Site .. 69 Vertical separation .. 69 Horizontal separation .. 71 Soil coarse fragment content .. 71 Type of limiting layer .. 71 For Linear Loading Rate/Effluent Flow .. 71 For Vertical Separation .. 71 Slope .. 72 Low 72 Steep Slopes .. 72 Slope Shape and Location .. 72 Available area .. 73 Climate .. 73 Location and type of use .. 74 Combined Constraints .. 74 Connection to the Onsite SYSTEM Piping ..75 Connections and Piping Performance standards .. 75 Connections and Piping Description and Principles of Operation.
